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Permanent-split capacitor motor
In this motor, the capacitor in series with the auxiliary winding is not switched out after starting.
It remains in the circuit; therefore the centrifugal switch is not needed.
Since the capacitor and the auxiliary winding are in the circuit continuously, they should be properly designed.
The value of the capacitor is chosen such that the phase angle difference between the currents in the main and auxiliary windings are exactly 90o.
Such a motor will have a perfectly uniform rotating magnetic field at some specific load.
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March 27, 2008 | Filed Under Engineering
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